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How to implement guide with activerecord `pluck` returning unexpected results in ruby on rails 7.1

👀 Views: 35 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-12
ruby rails activerecord

I'm working through a tutorial and I'm experiencing an scenario with the `pluck` method in ActiveRecord when trying to retrieve a specific attribute from a collection of records. I have a `users` table with attributes `id`, `name`, and `email`. I want to get a list of emails for all users but instead of returning a flat array, it seems to be giving me an array of arrays, which is not what I expected. Here's the query I'm using: ```ruby User.pluck(:email) ``` I expected to get something like this: ``` ["user1@example.com", "user2@example.com", "user3@example.com"] ``` However, the output is: ``` [["user1@example.com"], ["user2@example.com"], ["user3@example.com"]] ``` I've also tried using `select` before `pluck`, like this: ```ruby User.select(:email).pluck(:email) ``` But it gave me the same result. I checked the data in the database and there are no nested structures that could cause this. I am using Ruby on Rails 7.1 and I'm not sure if there's a configuration scenario or something else entirely. Any insights would be appreciated! The stack includes Ruby and several other technologies. Is this even possible? Cheers for any assistance!